Tetrahydroxydiboron (Bis-boric Acid): a Versatile Reagent for Borylation, Hydrogenation, Catalysis, Radical Reactions and H2 Generation

摘要

Diboron compounds with a B-B bond, discovered with B2Cl4 a century ago, have been developed only since the turn of this century for catalyzed borylation reactions, mostly with the well-know reagent bis(binacolato)diboron, (B(2)pin(2)). On the other hand, chemistry of tetrahydroxydiboron (THDB), also named bis-boric acid, is relatively underdeveloped. In this review, the properties of THDB as a borylation, reductant (including transfer hydrogenation), catalyst, source of radicals and generator of H-2 from water upon hydrolysis are summarized.

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